Table 1.
Organ at risk dose constraints
| Organ | Constraint(s) |
|---|---|
| Spinal cord | 18 Gy < 0.35 cm3 |
| 12.3 Gy < 1.2 cm3 | |
| MPD < 21.9 Gy | |
| Brachial plexus | 20.4 Gy < 3 cm3 |
| MPD < 24 Gy | |
| Aorta, SVC and IVC | 39 Gy < 10 cm3 |
| MPD < 49 Gy | |
| Pericardium | 24 Gy < 15 cm3 |
| MPD < 30 Gy | |
| Trachea | 15 Gy < 4 cm3 |
| MPD < 30 Gy | |
| Combined lungs – ITV | 11.4 Gy < 1000 cm3 |
| 10.5 Gy < 1500 cm3 | |
| Oesophagus | 17.7 Gy < 5 cm3 |
| MPD < 25.2 Gy | |
| Rib | 40 Gy < 5 cm3 |
| MPD < 50 Gy | |
| Chestwall | 30 Gy < 30 cm3 (<70 cm3 for tumours on the CW) |
| Skin | 30 Gy < 10 cm3 |
| MPD < 33 Gy |
IVC, inferior vena cava; SVC, superior vena cava; ITV, internal target volume; MPD, maximum point dose (defined as ≥0.03 cm3).